Agree, the main reason for purchasing ones own washing machine is to do the laundry whenever it fits in with other tasks.

If one has to go out to a neighbour, then most of this convenience would be lost.

For those without access to a washing machine, perhaps there might be a market for a central self service laundry facility in most built up areas.
A number of high capacity washing machines and dryers could be installed, these being operated by inserting coins.
A 3 phase electricity supply would permit of simple and reliable induction motor drives, and the water could be heated by gas at a lower cost than an electric heater in each washing machine.

For those customers who don't want to wait, it might be worthwhile to employ an attendant who could insert the coins on your behalf and have the washed and dried laundry ready for your collection.

Perhaps call this facility a "launderette" even those with a domestic washing machine might find this facility useful for large blankets and duvets that don't fit a domestic machine.

perhaps for the larger more dysfunctional family where no one actually talks to each other?
In our house my wife simply shouts up the stairs to daughter to bring her washing down, when the machine is going on, and will she bring any loose items off the bedroom floor as well , sometimes with extra foreign words thrown in to indicate that a greater degree of urgency and self preservation is required.